package com.hqyj.javaSpringBoot.modules.common.service.impl;

import com.hqyj.javaSpringBoot.Util.FileUtil;
import com.hqyj.javaSpringBoot.config.ResourcesConfigBean;
import com.hqyj.javaSpringBoot.modules.common.entity.ImageType;
import com.hqyj.javaSpringBoot.modules.common.entity.Result;
import com.hqyj.javaSpringBoot.modules.common.service.ImageService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;

@Service
public class ImageServiceImpl implements ImageService {

    @Autowired
    private ResourcesConfigBean configBean;

    @Value("${artifactId}")
    private String artifactId;

    @Override
    public Result<String> uploadImage(MultipartFile file, String imageType) {

        //判断文件是否为空
        if (file.isEmpty()) {
            return new Result<>(Result.ResultCode.FAILED.code, "image is null");
        }

        //判断文件是否为图片
        if (!FileUtil.isImage(file)) {
            return new Result<>(Result.ResultCode.FAILED.code, "file is not image");
        }

        //获取图片类型的相关信息（枚举对象）
        ImageType imageTypeMenu = ImageType.getImageTypeByName(imageType);

        //构建目标对象绝对地址 ---- d:/image/ + artifactId + imageType + 图片名字
        String imageName = String.format("%s.%s", System.currentTimeMillis(),
                FileUtil.getFileType(file.getOriginalFilename()));
        String destFolder = String.format("%s%s/%s",
                System.getProperty("os.name").toLowerCase().startsWith("win") ?
                        configBean.getWindowsLocation() : configBean.getLinuxLocation(),
                artifactId,
                imageType);
        File destFolderFile = new File(destFolder);
        if (!destFolderFile.exists()) {
            destFolderFile.mkdirs();
        }
        String absolutePath = String.format("%s/%s",
                destFolder,
                imageName);

        //构建目标对象相对地址 ---- /image/ + artifactId + imageType + 图片名字
        String relatePath = String.format("%s%s/%s/%s",
                configBean.getPath(),
                artifactId,
                imageType,
                imageName);

        //写图片到目标对象
        try {
            File destFile = new File(absolutePath);
            file.transferTo(destFile);

            //可选项：变更图片的尺寸
            FileUtil.changeImageSize(absolutePath, absolutePath,
                    imageTypeMenu.length, imageTypeMenu.height);

            //返回result对象
            return new Result<>(Result.ResultCode.SUCCESS.code, "upload image success", relatePath);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new Result<>(Result.ResultCode.FAILED.code, "upload image failed");
    }
}
